Dust separator



Feb- 22, 194 D. L. BENNETT ET AL DUST SEPARATOR Filed Feb. 16, 1942Patented Feb. 22, 1944 DUST SEPARATOB.

Dale L. Bennett, Riverside, and Alex J. McAllister, Chicago, 111., on toUnited Specialties Company, Chicago, 111., a corporation of Dela-Application February 16, 1942, Serial No. 431,112

2 Claims.

This invention relates to a cleaner, and particularly to a cleaneradapted to remove impurities from air and other gases. It has for oneobject to provide a simple and eiiective mechanism for accomplishing thepurpose mentioned.

Another object is to provide a cleaner of simple construction in whichthe inlet and outlet passages are combined in a single simple structurewhich is in eilect the cover for the remaining mechanism.

Another object is to provide such a cover as a unitary assembly shapedto include the full inlet and outlet passages.

Another object is to provide a simple cover means for an oil bath air orgas cleaner.

Other objects will appear from time to time throughout the specificationand claims.

This invention is illustrated more or less diagrammatically in theaccompanying drawing, wherein:

Figure 1 is a vertical, sectional view of one form of the device.

Figure 2 is a transverse section taken at line 2--2 of Figure 1.

Figure 3 is a plan view of the cleaner, taken from the upper end.

Figure 4 is a partial vertical section illustrating a modified form.

Figure 5 is a iragmentary elevation illustrating the lock of Figure 4.

Like parts are indicated by like characters throughout the specificationand the drawing.

The cleaner is usually made of sheet metal' for example. sheet steel-butit may be made of any other metal, and it may be made of materials otherthan metal. As shown, the cleaner includes an outer shell or wall i.Adjacent its lower edge a ring-like member 2 is secured to the wall i bysoldering, welding, or otherwise. This ring has a laterally turnedportion 3 and a downwardly turned flange 4. Packing material 5 may bepositioned within the space below the member 3. A pair of ears 8, 6 ispositioned in a ring-like member I which is positioned adjacent thelower end of the wall I and which may be against the upper surface ofthe member 3. This ring may or may not be permanently positioned, asdesired. A bail 8 is mounted in the perforated ears 5 and arranged forswinging. It may have spring loops 9, 9 formed in it, and may also carrya roller or anti-friction member I 0.

A cup member H is arranged to be removably positioned at or about thelower end.0f the wall member I. As shown, the cup is provided with arounded bottom portion l2 within which a depression I! may be formed toreceive the roller ill or some equivalent member. Adjacent its upper endor edge the cup may be provided with a rolled portion H which contactsthe packing 5, if any packing is present. The upper edge or the cup I Imay be of any desired form. It is preferably so arranged that it has asomewhat extended area of contact with or against the packing or againstthe under surface of the member 3 in case no packing is present.

The cup Ii is provided with an outwardly extending head or depression l5and with an adjacent, inwardly extending member l6 which forms on itsupper surface a. shoulder ll. Upon this shoulder is positioned a bailiesupporting member i8. This baille support may be held in place withinthe space provided by the bead 5 and against the shoulder I! by a ringl9. The ring is crowded in this space and holds the support member 18.The ring may be sprung into place removably or may be held permanentlyin place,

and obviously many other sorts of means may be used for holding thebaflle support l8 against dis-= placement.

Secured to the support it is a baffle member 20. As shown, this membercontacts the support It by a number of feet 28:; positioned away fromthe inner edge 2! of the support, and thus the inner edge 2| comprisesin itself a baffling member, and there is a clearance between the upperedge of the member-'26 and the under surface of the support i8. Thebaille 26 is provided with a raised central portion 22 and is providedwith a plurality of downwardly bent portions 23 which provide or formpassages 24. A member 25 may be secured to the baflle 20 beneath theraised central portion 22.

Positioned symmetrically and centrally with relation to the outer wall Iis an inner wall and passage member 21. At or adjacent its lower end,this member is secured to and supported from the outer wall member by aspider 28 which is provided with an outer annular portion 29 which issecured to the ring 2. It is provided with an inner annular portion 30which might be secured to the inlet passage 21, but in the particularform of this invention here shown it is secured to the cylindricalportion 3| of a baffle 32 which as shown is provided with an upwardlycurved terminal portion 33. Obviously the battle structure including themembers 3|, 32, and 33 could be made unitary with the central tubularportion 21.

Adjacent its upper end the tube 21 has secured exteriorly an annularportion 34 of a downwardly the outer wall member I.

is provided with a downwardly bent annular facing and downwardly curvedhome 35. This baiile also serves to limit and position an annular member38 which is perforated or formed of mesh material and which preventsupward displacement of the filtering material 31, which as shownsubstantially fills the space defined by the wall I and the tube 21 andlies above the spider 28 and below the member 38. This material may beof almost any desired nature. One suitable material is metal wool, orother finely divided metal, and while copper is suitable for thispurpose, many other metals and many non-metallic filtering materials maybe used without departing from the spirit of the invention.

At its upper end the central tube 21 is cut oiT diagonally, as indicatedat 38, so that one side is of greater length than the opposite side.Secured at or near the upper end is the annular portion 39 of a closingmember 40. This member is inclined, as shown, and the portion 40 isjoined to the portion 39 by a curved portion 4|, the curvature of whichvaries as shown. The portion 40 serves as a closure or cover for theupper end of the annular space defined between the outer wall I and thecentral inlet passage member 21, and it is provided with an upturnedflange 40a which is secured to the inner face of the outer wall I bywelding, soldering, or otherwise. Preferably on the side of the cleanerto which the member 40 is closest to the top of the assembly, an outletpassage member 42 is secured in place. As shown it is secured to anoutwardly bent portion 43 of the side wall I. On the opposite side,where the member 40 is at its lowest point, an inlet passage connectionmember 44 is secured to an outwardly bent portion 45 of A cover member46 flange 47 by means of'which it is secured to the upper end of thewall member I. While the outlet passage connecting member 42 and theinlet passage connecting member 44 are shown as diametrically oppositeto each other, it is to be understood that they need not be so arranged.It is ordinarily convenient to have each of these members secured tothat portion of the housing which provides the most space for it, andthus it is convenient to have the inlet passage opposite the lowest edgeof the member 40, and it is convenient to have the outlet passage memberconnected opposite the highest edge ber 40, but the invention is notlimited' to this exact arrangement.

The member 40 has been shown and described as being generally fiatexcept for the perforation of the curved portion 4|. It need not,however, be flat, and it can be of almost any shape so long as itprovides a cover for the annular space defined by the members I and 21,and so long as it does not make the attachment of the members 42 and 44inconvenient or impossible. might be flat, as shown, or curved, or mighthave flat portions and curved portions.

While the device of this invention may be held in place in any desiredmanner, it is convenient to provide a bracket, and the member 48 is sucha bracket member. As shown it is secured to the outer wall of thehousing at any desired location, and is provided with two laterallyextending members or portions 48 and 50, which are suitably shaped toreceive some attaching means. Thus notches are provided. Of courseperforations might be substituted for the notches, and the invention isin no way limited to the use of the bracket nor to any particular typeof bracket. That which is shown is merely one convenient bracket form.

In the modified form of Figures 4 and 5 the part are substantially thesame as those described in connection with Figures 1, 2, and 3. The mainchange is the provision of the bayonet lock mechanism and the associatedparts. Thus there is secured to the ring-like portion 30, which forms apart of the-spider assembly, one or more pins 52 which are adapted toextend through and engage bayonet slots 53 which are formed in the tubeor passage member 21. An extension 54 is secured to the generallycylindrical member 3|, which may be attached to or formed as a part ofthe baiile 32, and this extension is provided with an offset oroutwardly flared portion 55.

The use and operation of the invention are as follows:

member 44 and pass downtube 21. It will then be carcollect in the cup sothat gradually during use the oil becomes more or less filled withimpurities.

When it is necessary to clean the oil, the bail is moved from theposition shown to a position in which it no longer holds the cup inplace. The cup is then removed and the oil is discharged for cleaning orreplacement. As the baflie assembly is mounted in the cup it goes withthe cup, and it it is necessary to remove the baiiie assembly from thecup, that is done by removing the ring I! which then permits the carrieri8 to be withdrawn and with it, the baflle 20. When the cup and baffleare removed, the spider 28 which supports the filter material 31 may ormay not be removed with it. Thus the spider ring 29 may be permanentlysecured to the cup ll so that it moves with it or it may not. If it ispermanently secured to the cup, then when the cup is removed the spiderand the bailie 32, 33 come with it. In the form shown in Figure 1 onspecial arrangement is made at the end of the inlet tube 21 forengagement with the baflle ring 3| or the spider ring 30 or any of theparts adjacent this end of the device, and they may either iit togetherwith a friction fit or be permanently secured in any desired manner. Inthe form of Figure 4, however, the structure differs, and the baflle issecured to the spider ring and the latter carries one or more pins whichengage in suitable notches formed in the bottom of the tube 21, and thuswhen that part of the device is to be removed from the tube, it is givena slight turn to move the pins into the position in which they can bereadily i'reed from or withdrawn from the slots or notches. Also in theform of Figure 4, when the assembly is moved into the position shown inthat figure the filter material may be somewhat raised, as shown, andthe edge of the spider ring which is 'flared away from the tube 2'! iseirective to prevent clogging or catching or the filter material whichmight otherwise interfere with the insertion or re-insertion oi thedevice. The modified construction oi! Figure 4 is therefore an alternatetom and one which possibly makes the assembly and re-assembly oi thedevlce simpler and less likely to interlerence from the filtermaterial'than. does the form of Figure 1. Both forms, however, areadvantageous.

I claim:

1. In combination in an air cleaner, a housing and an inlet passagemember positioned within said housing, and forming with said housing anair passage, a cover completely closing the upper end of said housingand in continuous contact therewith, a partition within said housing, aninlet opening in the wall of said housing above the point of contact ofsaid partition with said housing wall, and an outlet opening in the wallof said housing below the point of contact of the partition with thehousing wall, and a cup-like member removably closing the bottom of saidhousing, and a member positioned to move with said cup and including anannular part positioned to contact said inlet passage member, saidannular part being flared outwardly adjacent its upper end, andremovable latch means positioned partly on said outlet passage memberand partly on said annular member, and adapted to secure the tworemovably together.

2. In combination in an air cleaner, a housing and an inlet passagemember positioned within said housing, and forming with said housing anair passage, a cover completely closing one end of said housing, theperiphery of said partition being in continuous contact with saidhousing, a partition within said housing, an inlet opening in the wallof said housing above the point of contact of said partition with saidhousing wall, and an outlet opening in the wall of said housing belowthe point of contact of the partition with the housing wall, said twoopenings lying generally within the same planes, and a cup-like memberremovably closing the bottom of said housing, and a member positioned tomove with said cup and including an annular part positioned to contactsaid inlet passage member, said annular member being flared outwardlyadjacent its upper end, and bayonet lock means positioned partly on saidinlet passage member and partly on said annular member, adapted tosecure the two removably together.

DALE L. BENNE'I'I. ALEX J. MOAI-LIBTER.

